u-boot: upgrade 2021.04 -> 2021.07

(Changes of v2021.07)

Processed 1730 csets from 187 developers
29 employers found
A total of 402449 lines added, 82710 removed (delta 319739)

(From OE-Core rev: df987d673c933c1040a86a863d00387df7c550cc)

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/u-boot/u-boot-common.inc

@@ -12,7 +12,7 @@ PE = "1"
 
 # We use the revision in order to avoid having to fetch it from the
 # repo during parse
-SRCREV = "b46dd116ce03e235f2a7d4843c6278e1da44b5e1"
+SRCREV = "840658b093976390e9537724f802281c9c8439f5"
 
 SRC_URI = "git://git.denx.de/u-boot.git \
           "